#/usr/bin/python
#coding:utf-8
__author__ = 'guolt'

from socket import *

HOST='localhost'
PORT=21567
BUFSIZ=1024
ADDR=(HOST,PORT)

udpCliSock=socket(AF_INET,SOCK_DGRAM)

while True:
    data=raw_input('>')
    if not data:break
    udpCliSock.sendto(data,ADDR)
    data,ADDR=udpCliSock.recvfrom(BUFSIZ)

    if not data:break
    print 'close'
udpCliSock.close()
